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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/5392

Title: TRANSFORMATION STUDIES OF M-TYPE TO W-TYPE HEXAFERRITE IN BAFE12-2XCO3XO19
Authors: MANDAL, SK
SINGH, K
BAHADUR, D
Issue Date: 1994
Publisher: CHAPMAN HALL LTD
Citation: JOURNAL OF MATERIALS SCIENCE, 29(14), 3738-3742
Abstract: Samples of general formula BaFe12-2xCo3xO19 (x=0.1, 0.3, 0.5) have been synthesized by ceramic as well as citrate gel routes. The X-ray diffraction patterns indicate that M-type phase forms for x=0.1, while W-type phase is favourable for x=0.3 and 0.5. The results tor x=0.3 are particularly interesting. While the X-ray diffraction data show evidence of a monophasic W-type hexaferrite, the magnetic, thermal and microstructural investigations indicate a secondary phase presumably at grain boundaries. Transformation of M- to W-type hexaferrite has been explained in terms of different possibilities such as nucleation of secondary phases, formation of vacancies and different site occupation of ions in the structure.
URI: http://dx.doi.org/10.1007/BF00357342
http://dspace.library.iitb.ac.in/xmlui/handle/10054/5392
http://hdl.handle.net/10054/5392
ISSN: 0022-2461
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